Population genomic structure of a widespread, urban-dwelling mammal: The eastern grey squirrel (Sciurus carolinensis).

Autor: Fusco NA; Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut, USA., Cosentino BJ; Department of Biology, Hobart and William Smith Colleges, Geneva, New York, USA., Gibbs JP; Department of Environmental Biology, State University of New York College of Environmental Science and Forestry, Syracuse, New York, USA., Allen ML; Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA., Blumenfeld AJ; Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut, USA., Boettner GH; Department of Environmental Conservation, University of Massachusetts-Amherst, Amherst, Massachusetts, USA., Carlen EJ; Department of Biology, Washington University-St. Louis Campus, St. Louis, Missouri, USA., Collins M; Department of Environmental Science and Technology, University of Maryland, College Park, Maryland, USA., Dennison C; Ohio Division of Wildlife, Columbus, Ohio, USA., DiGiacopo D; Yreka Fish and Wildlife Office, U.S. Fish and Wildlife Service, Yreka, CA, USA., Drapeau Picard AP; Insectarium de Montréal/Espace pour la vie, Montréal, Quebec, Canada., Edmonson J; Sonderegger Science Center, Edgewood College, Madison, Wisconsin, USA., Fisher-Reid MC; Department of Biological Sciences, Bridgewater State University, Bridgewater, Massachusetts, USA., Fyffe R; Landmark Pest Management, ABC Humane Wildlife Control & Prevention Inc., Arlington Heights, Illinois, USA., Gallo T; Department of Environmental Science and Technology, University of Maryland, College Park, Maryland, USA., Grant A; Department of Integrative Biology, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada., Harbold W; Maryland Department of Natural Resources, Monitoring and Non-Tidal Assessment Division, Annapolis, Maryland, USA., Heard SB; Department of Biology, University of New Brunswick, Fredericton, New Brunswick, Canada., Lafferty DJR; Department of Biology, Northern Michigan University, Marqeutte, Michigan, USA., Lehtinen RM; Department of Biology, The College of Wooster, Wooster, Ohio, USA., Marino S; Department of Biology, Wilkes University, Wilkes-Barre, Pennsylvania, USA., McDonald JE; Department of Environmental Science, Westfield State University, Westfield, Massachusetts, USA., Mortelliti A; Department of Life Sciences, University of Trieste, Trieste, TS, Italy., Murray M; Department of Conservation and Science, Lincoln Park Zoo, Chicago, Illinois, USA., Newman A; Maryland Department of Natural Resources, Monitoring and Non-Tidal Assessment Division, Annapolis, Maryland, USA., Oswald KN; Mitrani Department of Desert Ecology, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel., Ott-Conn C; Michigan Department of Natural Resources, Wildlife Disease Laboratory - Wildlife Division, Naubinway, Michigan, USA., Richardson JL; Department of Biology, University of Richmond, Richmond, Virginia, USA., Rimbach R; Department of Behavioural Biology, University of Münster, Münster, Germany., Salaman P; Galapagos Conservancy, Washington, District of Columbia, USA., Steele M; Department of Biology, Wilkes University, Wilkes-Barre, Pennsylvania, USA., Stothart MR; Department of Ecosystem and Public Health, University of Calgary, Calgary, Alberta, Canada., Urban MC; Department of Ecology and Evolutionary Biology and Center of Biological Risk, University of Connecticut, Storrs, Connecticut, USA., Vandegrift K; Department of Biology, Center for Infectious Disease Dynamics, The Pennsylvania State University, State College, Pennsylvania, USA., Vanek JP; New York Natural Heritage Program, Albany, New York, USA., Vanderluit SN; Department of Biology, Queens University, Kingston, Ontario, Canada., Vezina L; Department of Biology, University of New Brunswick, Fredericton, New Brunswick, Canada., Caccone A; Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut, USA.
Jazyk: angličtina
Zdroj: Molecular ecology [Mol Ecol] 2024 Feb; Vol. 33 (3), pp. e17230. Date of Electronic Publication: 2023 Dec 11.
DOI: 10.1111/mec.17230
Abstrakt: Urbanization is a persistent and widespread driver of global environmental change, potentially shaping evolutionary processes due to genetic drift and reduced gene flow in cities induced by habitat fragmentation and small population sizes. We tested this prediction for the eastern grey squirrel (Sciurus carolinensis), a common and conspicuous forest-dwelling rodent, by obtaining 44K SNPs using reduced representation sequencing (ddRAD) for 403 individuals sampled across the species' native range in eastern North America. We observed moderate levels of genetic diversity, low levels of inbreeding, and only a modest signal of isolation-by-distance. Clustering and migration analyses show that estimated levels of migration and genetic connectivity were higher than expected across cities and forested areas, specifically within the eastern portion of the species' range dominated by urbanization, and genetic connectivity was less than expected within the western range where the landscape is fragmented by agriculture. Landscape genetic methods revealed greater gene flow among individual squirrels in forested regions, which likely provide abundant food and shelter for squirrels. Although gene flow appears to be higher in areas with more tree cover, only slight discontinuities in gene flow suggest eastern grey squirrels have maintained connected populations across urban areas in all but the most heavily fragmented agricultural landscapes. Our results suggest urbanization shapes biological evolution in wildlife species depending strongly on the composition and habitability of the landscape matrix surrounding urban areas.
(© 2023 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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